-
Want to remove ads? Register an account and login to see fewer ads, and become a Supporting Member to remove almost all ads.
Tyres 19" 18" Efficiency
-
From the Horse's Mouth: The Tyre Choice Efficiency Difference
Trawling the EPA CSI website has its rewards. I found this nugget: At 50 mph, road load is 11.13/9.95 = 11.86% higher with the 19 inch tyres compared to the 18 inch. I presume the 18" are tested with the Aero covers on. The energy/mile penalty will increase at higher speeds.